species 40,240 observations
Prostrate Knotweed
Polygonum aviculare
Field notes
Polygonum aviculare or common knotgrass is a plant related to buckwheat and dock. It is also called prostrate knotweed, birdweed, pigweed and lowgrass. It is an annual found in fields and wasteland, with white flowers from June to October. It is widespread across many countries in temperate regions, apparently native to Eurasia, naturalized in temperate parts of the Southern Hemisphere.
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44
native animals
supported in the US
supported in the US
-
Caterpillars
Moths and butterflies raised on it
Chickweed Geometer Moth, Bent-lined Carpet, Lucerne Moth, Many-lined Carpet Moth
11
-
Hosted animals
Gall makers, leaf miners and other animals living on or in it
Weevil
1
-
Plant eaters
Animals that feed on it
Mallard, Common Raven, Eurasian Jackdaw, California Quail
24
-
Flower visitors
Pollinators and other flower visitors
White-crowned Sparrow, Brown-headed Cowbird, Bicolored Striped Sweat Bee, Purplish Copper
8
Children
Range
Greener is more native, amber more introduced; paler is less certain. How this was decided
Key traits
- Layer
- Herbaceous plants
- Light
- Full sun Part shade
- Moisture
- Dry Well drained Moist
- Resists
- Compaction Dry soil Foot traffic Poor soil
From NC State Extension and USDA PLANTS.